Real time wideband direction finding

Author

Tutaysalgir, Osman ; Orduyilmaz, Adnan ; Oktem, Kerem ; Serin, Mahmut ; Yildirim, Alper

Author_Institution

Tubitak Bilgem Iltaren, Ankara, Turkey

fYear

2015

fDate

16-19 May 2015

Firstpage

105

Lastpage

108

Abstract

In this paper, the developed FFT based interferometric direction finding of wideband radar threats for electronic support (ES) and electronic intelligence (ELINT) is presented. Using this method, target radar signal is separated from other radar signals using FFT. Phases of extracted radar signals for two or more channels are calculated. Angle of arrival of extracted radar signal is estimated with the phase differences of each channel pair at selected radar frequency. This method is also applied to frequency agile radars and pulse compression waveform radars. This method is implemented on FPGA platform in real time. For different SNR values, FFT sizes, radar signal instantaneous bandwidths simulation results and real time implementations are presented.

Keywords

direction-of-arrival estimation; fast Fourier transforms; field programmable gate arrays; pulse compression; radar interferometry; radar signal processing; radio direction-finding; FFT based interferometric direction finding; FPGA platform; angle of arrival estimation; electronic intelligence; electronic support; extracted radar signals; frequency agile radars; pulse compression waveform radars; real time wideband direction finding; target radar signal; wideband radar threats; Field programmable gate arrays; Microwave measurement; Radar; Radio frequency; Real-time systems; Signal to noise ratio; Wideband; Direction Finding; FPGA; Wide band digital signals;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Communications Applications Conference (SIU), 2015 23th

Conference_Location

Malatya

Type

conf

DOI

10.1109/SIU.2015.7130054

Filename

7130054